Hi, Carla. You have just enumerated 2 of the many drawbacks of oil finishes; they don't protect well and, they should be renewed every year. Aside from that, there is a lot of "creative" labelling of oil finishes. The good news, from your point of view, is that the oils are compatable so you should be able to recoat with just about any true oil or oil varnish blend with no problem. I suggest you consider products like Watco Danish Oil Finish, Deftoil, Minwax Antique Oil Finish or Minwax Tung Oil Finish.
There is an excellent book on the subject of finishes, Understanding Wood Finishing by Bob Flexner, published by The Reader's Digest Association/Rodale Press in 1999. This shold be available at most major bookstores. If you will review it, I think you will agree that oil finishes are not really that good. You might want to consider taking this opportunity to change to a varnish or other more protective finish. That shouldn't be more work than a couple of years of annually renewing the oil finishes.